v3.26.1
Summary of Material Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2025
Summary of Material Accounting Policies [Abstract]  
Schedule of Consolidated Financial Statements Subsidiaries included in the consolidated financial statements:
           

Percentage of
Ownership (%)

December 31,

   
   Name of investee  Main business  Location  2024  2025  Note
The Company  The News Lens Co., Ltd. (“TNL TW”)  Digital advertising, SAAS technology, artificial intelligence technology, data analysis, member management content service platform and audio-visual program production  Taiwan  100%  100% 
The Company  Inside Co., Ltd. (“Inside”)  Digital advertising, display network and content service platform  Taiwan  100%  100%   
The Company  The News Lens Hong Kong Ltd. (“TNL HK”)  Digital advertising and content service platform  Hong Kong  100%  100%   
The Company  TNLMG (“TNL MG”)  Special purpose entity for merger  Cayman 
-
 
-
  Note 1
The Company  Bule Ocean Acquisition Corp
(Blue Ocean)
  Special purpose entity for merger  America  100% 
-
  Note 1
The Company  TNL Mediagene Inc. (formerly known as TNL Mediagene Japan Inc.) (“MG”)  Holding Company  Japan  100%  100%   
The Company  Green Quest Holding Inc.
(“Green Quest”)
  Holding Company  Cayman  100%  100%  Note 2
TNL TW  Neptune Internet Media Technology Co., Ltd. (“SV”)  Ticket service, e-commerce and shopping guide, digital advertising and content service platform  Taiwan  100%  100%  Note 3
TNL TW  Easy Key 2 Asia Co., Ltd. (“EK2A”)  Market survey and marketing strategy consultant  Taiwan  100%  100%   
TNL TW  AD2iction Co., Ltd. (“AD2”)  Digital interactive advertising, advertising technology services and web platform technology  Taiwan  100%  100%   
TNL TW  S.C. Integrated Marketing Communication Co., Ltd. (“SC”)  Planning and execution services for Integrated marketing solutions  Taiwan  100%  100%   
TNL TW  STAR Communication Consultant Co., Ltd. (“ST”)  Planning and execution services for Integrated marketing solutions  Taiwan  100%  100%   
TNL TW  DaEx Intelligent Co., Inc. (“DaEx”)  Artificial intelligence technology and customer data platform service  Taiwan  97.89%  97.89%  Note 4
SC  Polydice Inc. (“POLYDICE”)  E-commerce and digital advertising  Taiwan  100%  100% 
MG  Mediagene Inc. 株式会社メディアジーン(“Mediagene”)  Media consulting business,
E-commerce and digital advertising
  Japan  100%  100% 
Mediagene  INFOBAHN Inc. 株式会社インフォバーン (“INFOBAHN”)  Media consulting business  Japan  100%  100% 
Green Quest  Dragon Marketing Inc.
(“Dragon Marketing”)
  Search engine optimization and social media marketing  Taiwan  100%  100%  Note 2
Schedule of Estimated Useful Lives of Property, Plant and Equipment The estimated useful lives of property, plant and equipment are as follows:
Office equipment   2 to 8 years
Leasehold improvements   3 to 15 years
Others   2 to 5 years
Schedule of Estimated Useful Lives for Current and Comparative Periods

The estimated useful lives for current and comparative periods are as follows:

 

Trademark 10 years to indefinite
Customer relationships   4 to 12 years
Website platform   3 to 9 years
Computer software   3 to 5 years
Copyright   1 to 3 months